We spent 2 night at Nui's appartment. The place is clean and comfortable and 5 min walk from BTS Skytrain (important as there is not much to do in the area). Nui provided all necessary information to easily find the apartment and also provided good advice; check in was fast and efficient.
If I have to complain about 2 things it would be the noise (basically you hear traffic all night, sometimes it sounds as if windows were open) and also the fact that there was no sheet/duvet but instead two separate basic blankets (and the pilows are a bit too big to our taste to enjoy a good night sleep). But overall a good experience and good price.